The structure and kinematics of the ISM around HD 192281

E. M. Arnal ... [et al.].

Serie: Trabajos publicados del IAR ; no. 1021

Resumen: Aims. This work aims at investigating the interaction of HD 192281 (O5 Vn((f))p) with its local ISM. The purpose is to analyse the effects that a massive star has on the structure and kinematics of its surrounding gas. Methods. To carry out this study, we have used high resolution radio continuum at 21-cm H1 line data from the Canadian Galactic Plane Survey (CGPS). This data base was complemented with radio continuum, infrared and molecular data retrieved from available surveys. Given that HD 192281 is very likely a runaway satr, we attempt to establish whether the observed H1 distribution can be interpreted in terms of a simple bow shock model. Results. The analysis of the H1 data shows the presence of an H1 feature likely associated with HD 192281. This feature remains detectable from [aprox] 5 to -10kms[elevado a la]-1. At the most negative radial velocities the shape of the H1 feature has counterparts at radio continuum, infrared and CO emissions. The analysis of the radio continuum data suggests a thermal spectrum for the gas related to this structure.